SAN DIEGO -- The San Diego Chargers will have to play the rest of the game without standout cornerback Quentin Jammer. He has a hamstring injury. The team announced he will not return.

That has to be worrisome for San Diego, which is dealing with a lot of injuries. When it is determined so soon after the injury that a player won’t return, it is an indication that the injury could be serious. Dante Hughes and Marcus Gilchrist will play more for the Chargers.

Meanwhile, the Chargers responded to the Chiefs’ touchdown with a nifty, seven-play, 80-yard drive culminated by a short touchdown run by Ryan Mathews. San Diego leads 17-7 midway through the third quarter.

UPDATE: San Diego defensive end Jacques Cesaire went to the locker room with a knee injury. He is questionable to return. He is playing for Luis Castillo, who is out for several weeks with a broken leg.

UPDATE: The post-game expectation is that Jammer should be able to play next week.